Pulsars Can See Black Holes - Ask a Spaceman!

[@chrissscottt]

Fascinating. I'd imagine that if the universe was an ocean then its gravitational topography would be very choppy.

[@edlaccohee9173]

As always I appreciate your content, I won't profess to being fully on the same level of knowledge and I always end up Watching several times, but I love it, thank you.

[@pavel9652]

I have been interested in astronomy most of my life, 25 years or so, and I have never stopped being impressed with what astronomers can achieve with crafty science and math, smart experiments, tedious data collection and insane processing methods! Hats downs, fingers crossed they will get the results they are looking for (and ones they aren't looking for) ;)

[@MrKago1]

I took a college course on lasers and we made a laser interferometer in the lab. despite being on specially made tables it was picking up someone walking. the building was mostly empty due to the class bring so early. it was on the 2nd floor. our prof looked out the window in the hallway and told us there was a jogger on the sidewalk in the green. dude was across a large parking lot with something like 8 rows and a huge college green. more than a football field away. it still picked him up. if you put your hand on the table it picked your heartbeat like you were banging a drum. really cool.

[@davecurtis8833]

Excellent stuff. I didnt know we were try to observe low frequency gravity waves by using milli second pulsars.

[@garrycollins3415]

I appreciate the education.

[@ninjalanternshark1508]

Your videos deserve more views =)

[@indream6318]

You are awesome Paul!

[@adeelaafzal3564]

Thanks for such a beautiful content.

[@pinoprato74]

Very interesting, very well explained, very well done, very useful for us laymen ... great job, thanks. Pino (Magna Graecia, Italy)

[@Metaldetectiontubeworldwide]

I'm imaging how slow paced and calm , employees of LIGO must WORK LOL 😁

[@TheCosmicGuy0111]

Nice!

[@marqessanzcora4089]

Thanks

[@MrTwisted003]

Never quite understood how gravity is the weaker force when it takes massive amounts to overcome the forces holding atoms together, but can be felt/detected millions of miles away (even many lightyears away), whereas other forces don't.

[@Brahmdagh]

Still boggles my mind something the size of a pulsar can be THAT FUCKING ACCURATE OF A CLOCK

[@pavel9652]

Conservation of momentum. You have a solar mass or more (1-2), compacted to a diameter of about 20km and spinning with relativistic speed, 0.25c on the equator. Any change to such a system would require or release astronomical energies, thus they are stable, but slow down gradually over time.

[@russellneitzke4972]

How can gravitational waves be redshifted?

[@redfoxsheenyshow4153]

It cool!

[@redfoxsheenyshow4153]

Paul, could something, anything "surf" a gravitational wave, thanks

[@pavel9652]

Alcubierre warp drive could work based on similar principles, by contracting the spacetime in front and expanding behind the spaceship. It is theoretical, highly speculative and probably impossible in practice drive, though.

[@redfoxsheenyshow4153]

Thanks Pavel, I have heard of the warp drive theory, sorry for my ignorance, but could you not make a ship, bound by the laws of nature, that u could just get rid of the warp drive and surf the wave or are they just too weak so render them negible......oh kind sir what is space made of? Is it granular, say like Graphene but on a much, much smaller scale, or is it smooth like a mill pond until something puts matter/energy into it?, Sorry for me ignorance, but I do love science. Thanks for your response Pavel

[@pavel9652]

​@@redfoxsheenyshow4153 Gravitational waves are far too weak and move too quickly. It would be much more efficient to use a flashlight as a drive, photon rocket. Spacetime is far stiffer than steel by the way, by 20 orders of magnitude! Quote: McDonald arrives at a number for Young's modulus of elasticity, of spacetime, that is in the order of 10^20 times larger than that of steel.

[@LyubomirIko]

We can detect Gravitational waves, but what if what Gravity is - is in other dimension?

[@megelizabeth9492]

I’m sure you’ve gotten a lot of questions about it, but JWST images?

[@jannikheidemann3805]

Condolences for NANOGrav loosing one of the telescopes shown on thier logo. F

[@steenlindholm8512]

I don't have the same level of knowledge, but why do you want to investigate this?

[@benmcreynolds8581]

So we always say, gravity is one of the weakest forces. I agree. But we have immensely large scale objects and clusters all throughout space. So.. that weak force wouldn't be so weak anymore, I mean just look at how our solar system functions to just show how important gravity is. Then scale that up vastly vastly larger. I feel there could be immense scale gravity, and small scale gravity. There's got to be a lot more to gravity than our current perspective.

[@pyne1976]

Time to remake your older videos with some animations. Much better.

[@deptfakex7472]

So many Theories and not enough proof. Some call it "pseudo-science".